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A compound which liberates reddish brown...

A compound which liberates reddish brown gas around the anode during electrolysis in its molten state is :

Sodium chloride
Copper (II) oxide
Copper (II) sulphate
Lead (II) bromide

A

Sodium chloride

B

Copper (II) oxide

C

Copper (II) sulphate

D

Lead (II) bromide

Text Solution

Verified by Experts

The correct Answer is:
D
Bromine gas is reddish-brown. During electrolysis of Lead (II) bromide, it gets liberated at the anode. Bromine is a diatomic gas reddish-brown in colour.
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ICSE-SAMPLE PAPER 3 -MULTIPLE CHOICE QUESTION
  1. An element having atomic number 19 and belongs to Alkali metals is

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  2. The salt which on hydrolysis forms acid is

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  3. A compound which liberates reddish brown gas around the anode during e...

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  4. The empirical formula and molecular mass of a compound are CH2O and 18...

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  5. Choose the correct answer from the options given below : Anhydrous ...

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  6. How many water molecules does hydrated calcium sulphate contain ?

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  7. Identify the molecule with a single covalent bond.

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  8. An element having electronic configuration 2, 8, 18, 3 belongs to whic...

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  9. The electronic configuration of Mg is

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  10. An element having atomic number 17 and belongs to halogens is

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  11. How many valence electrons are present in Mg?

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  12. Write the name of a non-metal of group 15.

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  13. When fused lead bromide is electrolysed we observe:

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  14. Arrange the following as per the instructions given in the brackets: ...

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  15. A chloride which forms a precipitate that is soluble in excess of ammo...

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  16. Sodium carbonate is a basic salt because it is a salt of a:

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  17. A polar covalent bond will be formed in which one of these pair of ato...

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  18. Sodium carbonate is a basic salt because it is a salt of a:

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  19. The vessel in which electrolysis of lead bromide is carried out is:

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  20. Arrange the following as per instructions given in the brackets: Cl,...

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